C&d/charter Holdings, Inc.

C & D Charter Power Systems, Inc.

C & D Power Systems, Inc.

Other

C&d Technologies, Inc.

Sudhan S Misra

Franz M Wagner

Terrence M Noveske

William B Brecht

Leslie S Holden

Douglas A Tenney

Drew D Heimer

Gregory Scharff

Stephen L Mraz

A terminal post seal arrangement for lead acid batteries is provided which may be used both as a moveable post seal or as a static post seal. In a first aspect of the subject invention, a battery is provided with an elastomeric sealing member rigidly fixed to both the cover of the battery and a bushing about a terminal post. Preferably, the sealing member includes a slack portion between its rigid connections which allows for relative movement between the bushing and the cover. In a second aspect of the subject invention, a collar is formed in the cover to bound the terminal post. The collar and/or the sealing member are formed at least partially tapered such that relative movement between the collar and the sealing member causes interferent engagement. It is preferred that interference between the collar and the sealing member become greater with increasing extent of relative movement.

Post seal for lead acid batteries

A lead-acid cell includes a case, positive and negative plates within the case, microporous separator material between adjacent plates and electrolyte in a starved amount, with the case having jar and covers joined by a weldment along overlapping cover and jars. The positive plates include a grid frame with an intermediate member extending between spaced apart generally peripheral portions of the frame, with pasted active material on the grid frame separated substantially into two portions by the intermediate member. Compressive force is adjustably continuously applied to the positive and negative plates within the case. The plates are suspended within the case at positions removed from the wall of the case, while plate growth is permitted in a manner that plate shorting is avoided.

Recombinant lead-acid cell and long life battery

A recombinant lead-acid battery, and method for operating thereof, are provided wherein the battery includes a case with a a plurality of lead-acid cells therewithin. The cells are in vapor communication one with another, and in vapor communication with discrete catalyst units. The catalyst units act to enhance recombination within the case of hydrogen and oxygen into vapor phase water. The number of discrete catalyst units is fewer than the cells.

Lead-acid battery vent valve-catalyst carrier assembly

A recombinant lead-acid battery comprising a plurality of lead-acid cells in a case including apertured partitions defining space for vapor migration among cells and comprising a catalyst unit communicating with said vapor migration space and enhancing recombination of hydrogen and oxygen.

Catalyst equipped vapor-communicating multi-cell valve regulated lead-acid battery

Catalyst equipped vapor communicating multi-cell valve regulated lead-acid battery

Modular battery assembly with thermal management system

A vent valve is capable of mechanical attachment to a lead acid battery through vent hole structure provided in the case cover. The vent valve is a molded hollow tubular housing having a cup portion, the bottom of which rests atop the battery case, and a neck portion extending through an opening into the battery case. The neck carries cam members on its outer surface which are engaged by similar opposed surfaces or pins on a portion of the case so that, when the cup bottom is seated on a sealing gasket on the case cover and the vent valve is rotated, it is secured and sealed to the case cover. A barrier extends across the inside of the vent valve housing and blocks passage of gases. A pair of oppositely directed valve openings through the barrier establish vent passages which are defined by nozzles protruding through the barrier in opposite directions. Each nozzle is covered by a resilient cup valve member arranged to yield to a higher pressure within a cup at predetermined pressure differentials. Limit means are positioned relative to the cup members to limit the amount of movement of the respective cups away from its nozzle.

Two way battery vent cap using cup valves

A lead-acid battery includes a compartmented case and a polarity of electrochemically lead-acid cells serially connected via respective positive and negative terminals. Each cell includes planar positive and negative plates and resides in one compartment of the case. The battery further includes an electrochemically inactive cell serially connected with the electrochemically active cells and being intermediately disposed respecting the electrochemically active cells. Plates of the inactive cell preferably have connecting lugs extending therefrom which align with corresponding connecting lugs of the positive and negative plates of the active cells. Rigid homogeneous foam separates the inactive cell plates from one another and fills the inactive cell compartment thereby providing support for the inactive cell plates.

Lead-acid battery with inactive cell

Battery thermal management system

Lead-acid battery having a cover extending beyond a jar

A lead-acid battery having thixotropic gel electrolyte comprising a blend of alkali metal polysilica and sulfuric acid. A method for producing a lead-acid battery having thixotropic gel electrolyte may be a continuous or an intermittent process. An aqueous colloidal dispersion may be produced by blending dry alkali metal polysilica with water and the gel electrolyte is provided by combining the aqueous collodial dispersion of alkali metal polysilica with liquid sulfuric acid.

Alkali metal polysilica gel electrolyte lead-acid battery and method for

A lead-acid battery having electrolytic-absorbent separator is formed in situ to produce sponge lead and lead dioxide active material. The method includes cooling the electrolyte to below room temperature, introducing a quantity of cooled electrolyte into the battery and charging the battery to a preselected degree. The battery is further filled with electrolyte to provide electrolyte saturated plates and separators and is further charged to a preselected degree defining a fully charged state.

Growing community of inventors

North Wales, PA, United States of America

Sudhan S Misra